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Finding the Fourth Proportional to 51,658.72, 71,285.88 and 28,993.84

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Solution

The fourth proportional to 51,658.72, 71,285.88 and 28,993.84 is: 40,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,658.72 : 71,285.88 = 28,993.84 : x
  2. Step 2: Convert to fraction form
    51,658.72/71,285.88 = 28,993.84/x
  3. Step 3: Cross multiply
    51,658.72x = 71,285.88 × 28,993.84
  4. Step 4: Simplify right side
    51,658.72x = 2,066,851,398.98
  5. Step 5: Solve for x
    x = 2,066,851,398.98/51,658.72
  6. Step 6: Final answer
    x = 40,009.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.